<template>
  <el-container class="home-container">
<!--    头部区域-->
    <el-header>
      <div>
        <img src="../assets/img/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button @click="logout" type="info">退出</el-button>
    </el-header>
<!--    页面主体区域-->
    <el-container>
<!--      侧边栏-->
<!--      动态设置侧边栏宽度-->
      <el-aside :width="isCollapse ? '64px' : '200px'">
          <div class="toggle-button" @click="toggleCollapse">|||</div>
<!--        侧边栏菜单区域-->
          <el-menu
            background-color="#545c64"
            text-color="#fff"
            active-text-color="#409eef"
            unique-opened
            :collapse="isCollapse"
            :collapse-transition="false"
            router
            :default-active="activePath">
<!--            一级菜单-->
            <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
<!--              一级菜单模板区域-->
              <template slot="title">
<!--                图标-->
                <i :class="iconsObj[item.id]"></i>
<!--                文本-->
                <span>{{item.authName}}</span>
              </template>
<!--              二级菜单-->
              <el-menu-item @click="saveNavState('/'+subItem.path)" :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id">
                <!--                图标-->
                <i class="el-icon-menu"></i>
                <!--                文本-->
                <span>{{subItem.authName}}</span>
              </el-menu-item>
            </el-submenu>
          </el-menu>
      </el-aside>
<!--      右侧内容主体-->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>

</template>

<script>
export default {
  name: 'Home',
  data () {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  methods: {
    // 退出登录
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取菜单数据
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
    },
    // 切换菜单
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  }
}
</script>

<style scoped lang="less">
  .home-container{
    height: 100%;
  }
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #ffffff;
  font-size: 20px;
  div{
    display: flex;
    align-items: center;
    span{
      margin-left: 15px;
    }
  }
}
  .el-aside{
    background-color: #333744;
    .el-menu{
      border-right: none;
    }
  }
  .el-main{
    background-color: #EAEDf1;
  }
  .iconfont{
    margin: 10px;
  }
  .toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #ffffff;
    text-align: center;
    letter-spacing: 0.2em;
  }
</style>
